Glass-blowing machine.



No. 659,291. Patented out. 9, |999. L. H. coLBunN.

GLASS BLOWING MACHINE.

(Application med Feb. 14, 199s.) y (No Model.) 2 Sheets-.Sheet I. f,

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No. 659,29I. Patented Oct. 9, |900.

'L. H. COLBURN.

GLASS BLUWING MAGHINE.

(Application led Feb. 14, 189B.)

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2 Sheets-Sheet 2.

UNITED STATES PATENT OEE-ICE.

LESLIE H. OOLBURN, OE TOLEDO, OHIO, ASSIGNOE To THE TOLEDO GLASSCOMPANY, OE SAME PLACE.

GLASS-BLOWING MACHINE.

SPECIFICATION forming part of Letters Patent N o. 659,291, dated October9, 1900. Application filed February 14, 1898. Serial No. 670,187. (Nomodel.)

To a/ZZ wir/m it may concern,-

Be it known that I, LESLIE H. COLBURN, a' citizen of the United States,residing at Toledo, in the county of Lucas and State of Ohio,

have invented certain new and useful Improvements in Glass-BlowingMachines, of which the following is a specification, reference being hadtherein to the accompanying drawings. p

Io The invention consists in the construction of a blowpipe having theair-controlling valve located therein; further, in the construction of aglass-blowing machine having a movable coupler or coupling whichactuates the air@Y valve by and upon the couplers engagement with theblowpipe, and, further, in such' a coupler having means for rotating itto rotate the pipe, with means for operating the valve by the movementof the coupler.

2o The invention further consists in the con-V struction, arrangement,and combination of the various parts, all as more fully hereinafterdescribed.

I have not deemed it necessary to show a complete glass-blowing machine,but only so much thereof as relates to the application and use of myinvention, the rest being shown in diagram.

In the drawings, Figure l is a diagrammatic section al elevation of aglass-blowing machine embodying my invention. Figs. 2 and 3 are verticalcentral sections through the upper part of the blowpipe and couplingtherewith, showing the valve in dilferent positions. Fig.

4 is a side elevation of the upper end of the blowpipe, showing itsvalve.

The ordinary glass-blowing machine comprises a standard or support whichhas suitable means for holding the blowpipe A in proper relation to themolds, which are indicated at B, and to a supply of air under pressureat the opposite end.

AS my invention does not relate to the mold nor to the opening andclosing devices therefor, nor to theconstruction of the standard, nor tothe Operating mechanism, I have not thought it necessary to illustratethose in detail, and the coupling which I have shown is substantiallythe same as that shown in patent of the United States No. 584,755 to H.J.

Colburn, dated June l5, 1897.

C is the upper bracket or arm, which oarries the tube D, at the lowerend of which is a coupling. The tube Dand its coupling are actuatedvertically by any suitable mechanism-such, for instance, as the springE, controlled by a cam F, which may be driven from any suitable sourceof power, the spring lowering the coupling and the cam lifting it.

The coupling is preferably driven so that it 6o parts are of knownconstruction and form by themselves no part of my present invention. Thetube D is supplied with air from any source. In this caseI have shown itas an air-supply means or device in the nature of a conduit D.

The blowpipe has any suitable supporting means-such, for instance, asthe enlarge 8o ment L, engaging in a bearing in the arm or arms, such asL. At a suitable point in the f length of the blowpipe, preferably nearthe upper end thereof, is a controlling-valve. This valve I preferablyform as shown in Figs. 8 5 2 and 3, comprisinga sleeve M, havingaohamber or passage N Within, which is adapted to connect the twocross-ports a, b, these crossports being separated by a partition ordiaphragm o and connecting, respectively, with 9o the main passage Oabove and below the partition c. The valve is held normally closed bymeans of a spring P, this spring bearing at one end against a collar orstop p on the pipe and the other end against the sleeve M. I preferablyarrange a port CZ through the sleeve to connect with thelower cross-portb when the valve is in its closed positio n that is, closed against thesup ply ofair under pressu re to the article to be blown-so that atmos-Ioo pheric pressure will prevail normally in the blowpipe proper and inthe article thereon.

able mechanism the cam F is turned in such a way as to permit the springE to act to lower the coupling over the upper end of the blowpipe, theparts first assuming the position shown in Fig. 2. In this position itis evident Io that the air-pressure can freelyenter the npper end of theblowpipe, but cannot enter the lower passage because of the partition c.The coupling continues its movement after the coupling proper iseifected,and such movement downward will move the sleeve M with it,connecting the air-supply under pressure in the chamber N with thecross-port b, and thence supply the pressure through the blowplpe to thearticle blown. 'lhe continuing zo movement of the cam F will, after theproper interval, lift the coupling, so as to close the air-supply portand open the port d and admit the atmospheric pressure into theblowpipe, and will finally withdraw the coupling from z5 the blowpipe,so that it may be withdrawn from the machine with the blown article.

I have shown the air-valve directly carried by the blowpipe and in theform of a sleeve. This form and location has some advantages,

3o and so far as my claims specify the location I believe it to bedesirable; but other features of my invention do not require thisspecific form or location of the valve.

In order lo understand and appreciate the advantages of having the valvedirectly on or controlling a port directly in the blowpipe, it must beremembered that when blowing with such machines the maximum pressure maynot exceed three ounces and the time of blow- 4o ing may not exceed fromfour to six seconds.

If the valve controlling the air-supply leads into an intermediatechamber, which in turn connects with the blowpipe, that chamber orpassage returns to atmospheric pressure every time the blowpipe isvtaken away and the valve closed, and that chamber is necessarily filledwith the air-pressure before it will be admitted through the blowpipe tothe article. Inasmuch as the chances of leakage,

5o &c., in this chamber are considerable and inasmuch as fractions ofseconds, as well as fractions of ounces of pressure, are of importancein the proper blowing of certain articles, it is desirable that acontrolling device for the pressure should be by a port directly in theblowpipe itself, as this insures the most accurate regulation of thepressure in the article to be blown, the time interval being fixed. Itwill also be observed that making this valve 6o in the shape of a sleevedoes not interfere with the sym metrical exterior of the biowpi pe, andtherefore does not interfere with its handlin g readily by the operatorsin the use of the device. In the initial marbering and blowing which isdone by the operator with this valvealso he can readily move itsufficiently to allow him to blow into the end in the usual manner.

VVh-at I claim as my invention is-v l. In a glass-blowing machine, thecombinat ion with means to supply air under pressure, of a blowpipeadapted to be supported detachably in operative relation to said supply,of a controlling device for said supply comprising a sleeve carried bythe blowpipe and adapted to be moved to open and close the ai r-supplyinto the article to be blown.

2. The combination in a blowpipe, of a controlling-valve for theair-passage in the pipe comprising a movable sleeve having a passage orchamber therein, two ports in sepa.

rated passages in the blowpipe, said sleeve adapted to be moved toconnect said ports or to close one of them.

3. In a glass-blowing machine, the combition with ablowpipe, of asupportfor the blowpipe, of an air-supply device, a coupler arranged above themouth of the blowpipe when in its support, means for moving saidcoupler, after the blowpipe is supported, into engagement therewith, anair-con trolling valve, and means for operating the air-controllingvalve by the movement of the coupler after the engagement has been madebetween the two.

4:. In a glass-blowing machine, the combination with the blowpipe, itssupport and an air-supply device, of a coupler adapted to be moved toconnect the air-supply device to the blowpipe and means for moving saidcoupler after connection has been perfected to control the air-supply.

5. In a glass-blowing machine, the combination with the blowpipe, itssupport, and an air-supply device, of a coupling, means for moving saidcoupling to engage with thelolowpipe, and for effecting a furthermovement of the coupling member after its connection to the blowpipc,tocontrol the air-supply thereto.

6. In a glass-blowing machine, the combination with the blowpipe, itssupport and an air-supply conduit, a coupling on the conduit, of a valveon the blowpipe for controlling the air-supply, and means for actuatingsaid valve by the coupling.

7. In a glass-blowing machine, the combination with the blowpipe, itssupport and the air-supply tube or conduit, means for verticallyactuating said tube and for rotating the same, a spring-actuated valveon the blowpipe, normally closed, and a connection between that valveand the coupling member whereby the movement of the coupling memberactuates the valve, substantially as described. f

8. In a glass-blowing machine, the combination with the blowpipe, itssupport and an air-supply conduit, a movable coupling on the conduit, avalve for controlling the ad mission of air to the blowpipe, means formoving the coupling into engagement with the pipe, and for giving it afurther movement after its en- IOO duit, a movable coupler at theterminus of 15 said conduit and arranged above the blowpipe When in itssupport, a valve controlling the ilow of air to the article to be blown,means for moving said coupler into engagement with the hlowpipe toeffect the coupling 2o of the two and to operate said valve.

In testimony whereof I affix my signature in presence of two witnesses.

LESLIE I-I. COLBURN.

Witnesses: v

FREDERICK L. GEnnEs, CARL H. BECKHAM.

